Abstract
Two new selaginellin derivatives, selaginellins K (1) and L (2), were isolated from Selaginella tamariscina (Beauv.) Spring and characterized as 2-formyl-4,4′-dihydroxy-3-[(4-hydroxyphenyl)ethynyl]biphene and 4,4′-dihydroxy-2-methyl-3-[(4-hydroxyphenyl)ethynyl]biphene on the basis of their spectroscopic data including UV, IR, 1D, and 2D NMR as well as HR-ESI-MS spectroscopic analysis.
Acknowledgements
This work was supported financially by grants from the National Natural Science Foundation of China (No. 30873149), the Chinese Medicine Research Program of Hunan Province (No. 2009059), the Science and Technology Program of Department of Science and Technology of Hunan Province (No. 2008FJ4182), the National Innovation Experiment Program for University Students (No. YA09060), and the Precision Equipment and Apparatus Foundation of Central South University (No. ZKJ2010033).